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<pre><span class="sourceLineNo">001</span>package com.github.sarxos.webcam;<a name="line.1"></a>
<span class="sourceLineNo">002</span><a name="line.2"></a>
<span class="sourceLineNo">003</span>import java.awt.image.BufferedImage;<a name="line.3"></a>
<span class="sourceLineNo">004</span>import java.io.BufferedOutputStream;<a name="line.4"></a>
<span class="sourceLineNo">005</span>import java.io.BufferedReader;<a name="line.5"></a>
<span class="sourceLineNo">006</span>import java.io.ByteArrayOutputStream;<a name="line.6"></a>
<span class="sourceLineNo">007</span>import java.io.Closeable;<a name="line.7"></a>
<span class="sourceLineNo">008</span>import java.io.IOException;<a name="line.8"></a>
<span class="sourceLineNo">009</span>import java.io.InputStreamReader;<a name="line.9"></a>
<span class="sourceLineNo">010</span>import java.net.ServerSocket;<a name="line.10"></a>
<span class="sourceLineNo">011</span>import java.net.Socket;<a name="line.11"></a>
<span class="sourceLineNo">012</span>import java.net.SocketException;<a name="line.12"></a>
<span class="sourceLineNo">013</span>import java.util.concurrent.ExecutorService;<a name="line.13"></a>
<span class="sourceLineNo">014</span>import java.util.concurrent.Executors;<a name="line.14"></a>
<span class="sourceLineNo">015</span>import java.util.concurrent.ThreadFactory;<a name="line.15"></a>
<span class="sourceLineNo">016</span>import java.util.concurrent.atomic.AtomicBoolean;<a name="line.16"></a>
<span class="sourceLineNo">017</span><a name="line.17"></a>
<span class="sourceLineNo">018</span>import javax.imageio.ImageIO;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import org.slf4j.Logger;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import org.slf4j.LoggerFactory;<a name="line.21"></a>
<span class="sourceLineNo">022</span><a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>public class WebcamStreamer implements ThreadFactory, WebcamListener {<a name="line.24"></a>
<span class="sourceLineNo">025</span><a name="line.25"></a>
<span class="sourceLineNo">026</span>        private static final Logger LOG = LoggerFactory.getLogger(WebcamStreamer.class);<a name="line.26"></a>
<span class="sourceLineNo">027</span><a name="line.27"></a>
<span class="sourceLineNo">028</span>        private static final String BOUNDARY = "mjpegframe";<a name="line.28"></a>
<span class="sourceLineNo">029</span><a name="line.29"></a>
<span class="sourceLineNo">030</span>        private static final String CRLF = "\r\n";<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span>        private class Acceptor implements Runnable {<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span>                @Override<a name="line.34"></a>
<span class="sourceLineNo">035</span>                public void run() {<a name="line.35"></a>
<span class="sourceLineNo">036</span>                        try {<a name="line.36"></a>
<span class="sourceLineNo">037</span>                                ServerSocket server = new ServerSocket(port);<a name="line.37"></a>
<span class="sourceLineNo">038</span>                                while (started.get()) {<a name="line.38"></a>
<span class="sourceLineNo">039</span>                                        Socket socket = server.accept();<a name="line.39"></a>
<span class="sourceLineNo">040</span>                                        LOG.info("New connection from {}", socket.getRemoteSocketAddress());<a name="line.40"></a>
<span class="sourceLineNo">041</span>                                        executor.execute(new Connection(socket));<a name="line.41"></a>
<span class="sourceLineNo">042</span>                                }<a name="line.42"></a>
<span class="sourceLineNo">043</span>                        } catch (Exception e) {<a name="line.43"></a>
<span class="sourceLineNo">044</span>                                LOG.error("Cannot accept socket connection", e);<a name="line.44"></a>
<span class="sourceLineNo">045</span>                        }<a name="line.45"></a>
<span class="sourceLineNo">046</span>                }<a name="line.46"></a>
<span class="sourceLineNo">047</span>        }<a name="line.47"></a>
<span class="sourceLineNo">048</span><a name="line.48"></a>
<span class="sourceLineNo">049</span>        private class Connection implements Runnable {<a name="line.49"></a>
<span class="sourceLineNo">050</span><a name="line.50"></a>
<span class="sourceLineNo">051</span>                private Socket socket = null;<a name="line.51"></a>
<span class="sourceLineNo">052</span><a name="line.52"></a>
<span class="sourceLineNo">053</span>                public Connection(Socket socket) {<a name="line.53"></a>
<span class="sourceLineNo">054</span>                        this.socket = socket;<a name="line.54"></a>
<span class="sourceLineNo">055</span>                }<a name="line.55"></a>
<span class="sourceLineNo">056</span><a name="line.56"></a>
<span class="sourceLineNo">057</span>                @Override<a name="line.57"></a>
<span class="sourceLineNo">058</span>                public void run() {<a name="line.58"></a>
<span class="sourceLineNo">059</span><a name="line.59"></a>
<span class="sourceLineNo">060</span>                        BufferedReader br = null;<a name="line.60"></a>
<span class="sourceLineNo">061</span>                        BufferedOutputStream bos = null;<a name="line.61"></a>
<span class="sourceLineNo">062</span>                        ByteArrayOutputStream baos = new ByteArrayOutputStream();<a name="line.62"></a>
<span class="sourceLineNo">063</span><a name="line.63"></a>
<span class="sourceLineNo">064</span>                        try {<a name="line.64"></a>
<span class="sourceLineNo">065</span>                                br = new BufferedReader(new InputStreamReader(socket.getInputStream()));<a name="line.65"></a>
<span class="sourceLineNo">066</span>                                bos = new BufferedOutputStream(socket.getOutputStream());<a name="line.66"></a>
<span class="sourceLineNo">067</span>                        } catch (IOException e) {<a name="line.67"></a>
<span class="sourceLineNo">068</span>                                LOG.error("Fatal I/O exception when creating socket streams", e);<a name="line.68"></a>
<span class="sourceLineNo">069</span>                                try {<a name="line.69"></a>
<span class="sourceLineNo">070</span>                                        socket.close();<a name="line.70"></a>
<span class="sourceLineNo">071</span>                                } catch (IOException e1) {<a name="line.71"></a>
<span class="sourceLineNo">072</span>                                        LOG.error("Canot close socket connection from " + socket.getRemoteSocketAddress(), e1);<a name="line.72"></a>
<span class="sourceLineNo">073</span>                                }<a name="line.73"></a>
<span class="sourceLineNo">074</span>                                return;<a name="line.74"></a>
<span class="sourceLineNo">075</span>                        }<a name="line.75"></a>
<span class="sourceLineNo">076</span><a name="line.76"></a>
<span class="sourceLineNo">077</span>                        // consume whole input<a name="line.77"></a>
<span class="sourceLineNo">078</span><a name="line.78"></a>
<span class="sourceLineNo">079</span>                        try {<a name="line.79"></a>
<span class="sourceLineNo">080</span>                                while (br.ready()) {<a name="line.80"></a>
<span class="sourceLineNo">081</span>                                        br.readLine();<a name="line.81"></a>
<span class="sourceLineNo">082</span>                                }<a name="line.82"></a>
<span class="sourceLineNo">083</span>                        } catch (IOException e) {<a name="line.83"></a>
<span class="sourceLineNo">084</span>                                LOG.error("Error when reading input", e);<a name="line.84"></a>
<span class="sourceLineNo">085</span>                                return;<a name="line.85"></a>
<span class="sourceLineNo">086</span>                        }<a name="line.86"></a>
<span class="sourceLineNo">087</span><a name="line.87"></a>
<span class="sourceLineNo">088</span>                        // stream<a name="line.88"></a>
<span class="sourceLineNo">089</span><a name="line.89"></a>
<span class="sourceLineNo">090</span>                        try {<a name="line.90"></a>
<span class="sourceLineNo">091</span><a name="line.91"></a>
<span class="sourceLineNo">092</span>                                socket.setSoTimeout(0);<a name="line.92"></a>
<span class="sourceLineNo">093</span>                                socket.setKeepAlive(false);<a name="line.93"></a>
<span class="sourceLineNo">094</span>                                socket.setTcpNoDelay(true);<a name="line.94"></a>
<span class="sourceLineNo">095</span><a name="line.95"></a>
<span class="sourceLineNo">096</span>                                while (started.get()) {<a name="line.96"></a>
<span class="sourceLineNo">097</span><a name="line.97"></a>
<span class="sourceLineNo">098</span>                                        StringBuilder sb = new StringBuilder();<a name="line.98"></a>
<span class="sourceLineNo">099</span>                                        sb.append("HTTP/1.0 200 OK").append(CRLF);<a name="line.99"></a>
<span class="sourceLineNo">100</span>                                        sb.append("Connection: close").append(CRLF);<a name="line.100"></a>
<span class="sourceLineNo">101</span>                                        sb.append("Cache-Control: no-cache").append(CRLF);<a name="line.101"></a>
<span class="sourceLineNo">102</span>                                        sb.append("Cache-Control: private").append(CRLF);<a name="line.102"></a>
<span class="sourceLineNo">103</span>                                        sb.append("Pragma: no-cache").append(CRLF);<a name="line.103"></a>
<span class="sourceLineNo">104</span>                                        sb.append("Content-type: multipart/x-mixed-replace; boundary=--").append(BOUNDARY).append(CRLF);<a name="line.104"></a>
<span class="sourceLineNo">105</span>                                        sb.append(CRLF);<a name="line.105"></a>
<span class="sourceLineNo">106</span><a name="line.106"></a>
<span class="sourceLineNo">107</span>                                        bos.write(sb.toString().getBytes());<a name="line.107"></a>
<span class="sourceLineNo">108</span><a name="line.108"></a>
<span class="sourceLineNo">109</span>                                        do {<a name="line.109"></a>
<span class="sourceLineNo">110</span><a name="line.110"></a>
<span class="sourceLineNo">111</span>                                                if (!webcam.isOpen() || socket.isInputShutdown() || socket.isClosed()) {<a name="line.111"></a>
<span class="sourceLineNo">112</span>                                                        br.close();<a name="line.112"></a>
<span class="sourceLineNo">113</span>                                                        bos.close();<a name="line.113"></a>
<span class="sourceLineNo">114</span>                                                        return;<a name="line.114"></a>
<span class="sourceLineNo">115</span>                                                }<a name="line.115"></a>
<span class="sourceLineNo">116</span><a name="line.116"></a>
<span class="sourceLineNo">117</span>                                                baos.reset();<a name="line.117"></a>
<span class="sourceLineNo">118</span><a name="line.118"></a>
<span class="sourceLineNo">119</span>                                                long now = System.currentTimeMillis();<a name="line.119"></a>
<span class="sourceLineNo">120</span>                                                if (now &gt; last + delay) {<a name="line.120"></a>
<span class="sourceLineNo">121</span>                                                        image = webcam.getImage();<a name="line.121"></a>
<span class="sourceLineNo">122</span>                                                }<a name="line.122"></a>
<span class="sourceLineNo">123</span><a name="line.123"></a>
<span class="sourceLineNo">124</span>                                                ImageIO.write(image, "JPG", baos);<a name="line.124"></a>
<span class="sourceLineNo">125</span><a name="line.125"></a>
<span class="sourceLineNo">126</span>                                                sb.delete(0, sb.length());<a name="line.126"></a>
<span class="sourceLineNo">127</span>                                                sb.append("--").append(BOUNDARY).append(CRLF);<a name="line.127"></a>
<span class="sourceLineNo">128</span>                                                sb.append("Content-type: image/jpeg").append(CRLF);<a name="line.128"></a>
<span class="sourceLineNo">129</span>                                                sb.append("Content-Length: ").append(baos.size()).append(CRLF);<a name="line.129"></a>
<span class="sourceLineNo">130</span>                                                sb.append(CRLF);<a name="line.130"></a>
<span class="sourceLineNo">131</span><a name="line.131"></a>
<span class="sourceLineNo">132</span>                                                try {<a name="line.132"></a>
<span class="sourceLineNo">133</span>                                                        bos.write(sb.toString().getBytes());<a name="line.133"></a>
<span class="sourceLineNo">134</span>                                                        bos.write(baos.toByteArray());<a name="line.134"></a>
<span class="sourceLineNo">135</span>                                                        bos.write(CRLF.getBytes());<a name="line.135"></a>
<span class="sourceLineNo">136</span>                                                        bos.flush();<a name="line.136"></a>
<span class="sourceLineNo">137</span>                                                } catch (SocketException e) {<a name="line.137"></a>
<span class="sourceLineNo">138</span>                                                        LOG.error("Socket exception from " + socket.getRemoteSocketAddress(), e);<a name="line.138"></a>
<span class="sourceLineNo">139</span>                                                        br.close();<a name="line.139"></a>
<span class="sourceLineNo">140</span>                                                        bos.close();<a name="line.140"></a>
<span class="sourceLineNo">141</span>                                                        return;<a name="line.141"></a>
<span class="sourceLineNo">142</span>                                                }<a name="line.142"></a>
<span class="sourceLineNo">143</span><a name="line.143"></a>
<span class="sourceLineNo">144</span>                                                Thread.sleep(delay);<a name="line.144"></a>
<span class="sourceLineNo">145</span><a name="line.145"></a>
<span class="sourceLineNo">146</span>                                        } while (started.get());<a name="line.146"></a>
<span class="sourceLineNo">147</span>                                }<a name="line.147"></a>
<span class="sourceLineNo">148</span>                        } catch (Exception e) {<a name="line.148"></a>
<span class="sourceLineNo">149</span><a name="line.149"></a>
<span class="sourceLineNo">150</span>                                String message = e.getMessage();<a name="line.150"></a>
<span class="sourceLineNo">151</span><a name="line.151"></a>
<span class="sourceLineNo">152</span>                                if (message != null) {<a name="line.152"></a>
<span class="sourceLineNo">153</span>                                        if (message.startsWith("Software caused connection abort")) {<a name="line.153"></a>
<span class="sourceLineNo">154</span>                                                LOG.info("User closed stream");<a name="line.154"></a>
<span class="sourceLineNo">155</span>                                                return;<a name="line.155"></a>
<span class="sourceLineNo">156</span>                                        }<a name="line.156"></a>
<span class="sourceLineNo">157</span>                                        if (message.startsWith("Broken pipe")) {<a name="line.157"></a>
<span class="sourceLineNo">158</span>                                                LOG.info("User connection broken");<a name="line.158"></a>
<span class="sourceLineNo">159</span>                                                return;<a name="line.159"></a>
<span class="sourceLineNo">160</span>                                        }<a name="line.160"></a>
<span class="sourceLineNo">161</span>                                }<a name="line.161"></a>
<span class="sourceLineNo">162</span><a name="line.162"></a>
<span class="sourceLineNo">163</span>                                LOG.error("Error", e);<a name="line.163"></a>
<span class="sourceLineNo">164</span><a name="line.164"></a>
<span class="sourceLineNo">165</span>                                try {<a name="line.165"></a>
<span class="sourceLineNo">166</span>                                        bos.write("HTTP/1.0 501 Internal Server Error\r\n\r\n\r\n".getBytes());<a name="line.166"></a>
<span class="sourceLineNo">167</span>                                } catch (IOException e1) {<a name="line.167"></a>
<span class="sourceLineNo">168</span>                                        LOG.error("Not ablte to write to output stream", e);<a name="line.168"></a>
<span class="sourceLineNo">169</span>                                }<a name="line.169"></a>
<span class="sourceLineNo">170</span><a name="line.170"></a>
<span class="sourceLineNo">171</span>                        } finally {<a name="line.171"></a>
<span class="sourceLineNo">172</span>                                for (Closeable closeable : new Closeable[] { br, bos, baos }) {<a name="line.172"></a>
<span class="sourceLineNo">173</span>                                        try {<a name="line.173"></a>
<span class="sourceLineNo">174</span>                                                closeable.close();<a name="line.174"></a>
<span class="sourceLineNo">175</span>                                        } catch (IOException e) {<a name="line.175"></a>
<span class="sourceLineNo">176</span>                                                LOG.error("Cannot close socket", e);<a name="line.176"></a>
<span class="sourceLineNo">177</span>                                        }<a name="line.177"></a>
<span class="sourceLineNo">178</span>                                }<a name="line.178"></a>
<span class="sourceLineNo">179</span>                                try {<a name="line.179"></a>
<span class="sourceLineNo">180</span>                                        socket.close();<a name="line.180"></a>
<span class="sourceLineNo">181</span>                                } catch (IOException e) {<a name="line.181"></a>
<span class="sourceLineNo">182</span>                                        LOG.error("Cannot close socket", e);<a name="line.182"></a>
<span class="sourceLineNo">183</span>                                }<a name="line.183"></a>
<span class="sourceLineNo">184</span>                        }<a name="line.184"></a>
<span class="sourceLineNo">185</span>                }<a name="line.185"></a>
<span class="sourceLineNo">186</span>        }<a name="line.186"></a>
<span class="sourceLineNo">187</span><a name="line.187"></a>
<span class="sourceLineNo">188</span>        private Webcam webcam = null;<a name="line.188"></a>
<span class="sourceLineNo">189</span>        private double fps = 0;<a name="line.189"></a>
<span class="sourceLineNo">190</span>        private int number = 0;<a name="line.190"></a>
<span class="sourceLineNo">191</span>        private int port = 0;<a name="line.191"></a>
<span class="sourceLineNo">192</span>        private long last = -1;<a name="line.192"></a>
<span class="sourceLineNo">193</span>        private long delay = -1;<a name="line.193"></a>
<span class="sourceLineNo">194</span>        private BufferedImage image = null;<a name="line.194"></a>
<span class="sourceLineNo">195</span>        private ExecutorService executor = Executors.newCachedThreadPool(this);<a name="line.195"></a>
<span class="sourceLineNo">196</span>        private AtomicBoolean started = new AtomicBoolean(false);<a name="line.196"></a>
<span class="sourceLineNo">197</span><a name="line.197"></a>
<span class="sourceLineNo">198</span>        public WebcamStreamer(int port, Webcam webcam, double fps, boolean start) {<a name="line.198"></a>
<span class="sourceLineNo">199</span><a name="line.199"></a>
<span class="sourceLineNo">200</span>                if (webcam == null) {<a name="line.200"></a>
<span class="sourceLineNo">201</span>                        throw new IllegalArgumentException("Webcam for streaming cannot be null");<a name="line.201"></a>
<span class="sourceLineNo">202</span>                }<a name="line.202"></a>
<span class="sourceLineNo">203</span><a name="line.203"></a>
<span class="sourceLineNo">204</span>                this.port = port;<a name="line.204"></a>
<span class="sourceLineNo">205</span>                this.webcam = webcam;<a name="line.205"></a>
<span class="sourceLineNo">206</span>                this.fps = fps;<a name="line.206"></a>
<span class="sourceLineNo">207</span>                this.delay = (long) (1000 / fps);<a name="line.207"></a>
<span class="sourceLineNo">208</span><a name="line.208"></a>
<span class="sourceLineNo">209</span>                if (start) {<a name="line.209"></a>
<span class="sourceLineNo">210</span>                        start();<a name="line.210"></a>
<span class="sourceLineNo">211</span>                }<a name="line.211"></a>
<span class="sourceLineNo">212</span>        }<a name="line.212"></a>
<span class="sourceLineNo">213</span><a name="line.213"></a>
<span class="sourceLineNo">214</span>        @Override<a name="line.214"></a>
<span class="sourceLineNo">215</span>        public Thread newThread(Runnable r) {<a name="line.215"></a>
<span class="sourceLineNo">216</span>                Thread thread = new Thread(r, String.format("streamer-thread-%s", number++));<a name="line.216"></a>
<span class="sourceLineNo">217</span>                thread.setUncaughtExceptionHandler(WebcamExceptionHandler.getInstance());<a name="line.217"></a>
<span class="sourceLineNo">218</span>                thread.setDaemon(true);<a name="line.218"></a>
<span class="sourceLineNo">219</span>                return thread;<a name="line.219"></a>
<span class="sourceLineNo">220</span>        }<a name="line.220"></a>
<span class="sourceLineNo">221</span><a name="line.221"></a>
<span class="sourceLineNo">222</span>        public void start() {<a name="line.222"></a>
<span class="sourceLineNo">223</span>                if (started.compareAndSet(false, true)) {<a name="line.223"></a>
<span class="sourceLineNo">224</span>                        webcam.addWebcamListener(this);<a name="line.224"></a>
<span class="sourceLineNo">225</span>                        webcam.open();<a name="line.225"></a>
<span class="sourceLineNo">226</span>                        executor.execute(new Acceptor());<a name="line.226"></a>
<span class="sourceLineNo">227</span>                }<a name="line.227"></a>
<span class="sourceLineNo">228</span>        }<a name="line.228"></a>
<span class="sourceLineNo">229</span><a name="line.229"></a>
<span class="sourceLineNo">230</span>        public void stop() {<a name="line.230"></a>
<span class="sourceLineNo">231</span>                if (started.compareAndSet(true, false)) {<a name="line.231"></a>
<span class="sourceLineNo">232</span>                        executor.shutdown();<a name="line.232"></a>
<span class="sourceLineNo">233</span>                        webcam.removeWebcamListener(this);<a name="line.233"></a>
<span class="sourceLineNo">234</span>                        webcam.close();<a name="line.234"></a>
<span class="sourceLineNo">235</span>                }<a name="line.235"></a>
<span class="sourceLineNo">236</span>        }<a name="line.236"></a>
<span class="sourceLineNo">237</span><a name="line.237"></a>
<span class="sourceLineNo">238</span>        @Override<a name="line.238"></a>
<span class="sourceLineNo">239</span>        public void webcamOpen(WebcamEvent we) {<a name="line.239"></a>
<span class="sourceLineNo">240</span>                start();<a name="line.240"></a>
<span class="sourceLineNo">241</span>        }<a name="line.241"></a>
<span class="sourceLineNo">242</span><a name="line.242"></a>
<span class="sourceLineNo">243</span>        @Override<a name="line.243"></a>
<span class="sourceLineNo">244</span>        public void webcamClosed(WebcamEvent we) {<a name="line.244"></a>
<span class="sourceLineNo">245</span>                stop();<a name="line.245"></a>
<span class="sourceLineNo">246</span>        }<a name="line.246"></a>
<span class="sourceLineNo">247</span><a name="line.247"></a>
<span class="sourceLineNo">248</span>        @Override<a name="line.248"></a>
<span class="sourceLineNo">249</span>        public void webcamDisposed(WebcamEvent we) {<a name="line.249"></a>
<span class="sourceLineNo">250</span>        }<a name="line.250"></a>
<span class="sourceLineNo">251</span><a name="line.251"></a>
<span class="sourceLineNo">252</span>        @Override<a name="line.252"></a>
<span class="sourceLineNo">253</span>        public void webcamImageObtained(WebcamEvent we) {<a name="line.253"></a>
<span class="sourceLineNo">254</span>        }<a name="line.254"></a>
<span class="sourceLineNo">255</span><a name="line.255"></a>
<span class="sourceLineNo">256</span>        public double getFPS() {<a name="line.256"></a>
<span class="sourceLineNo">257</span>                return fps;<a name="line.257"></a>
<span class="sourceLineNo">258</span>        }<a name="line.258"></a>
<span class="sourceLineNo">259</span><a name="line.259"></a>
<span class="sourceLineNo">260</span>        public boolean isInitialized() {<a name="line.260"></a>
<span class="sourceLineNo">261</span>                return started.get();<a name="line.261"></a>
<span class="sourceLineNo">262</span>        }<a name="line.262"></a>
<span class="sourceLineNo">263</span><a name="line.263"></a>
<span class="sourceLineNo">264</span>        public int getPort() {<a name="line.264"></a>
<span class="sourceLineNo">265</span>                return port;<a name="line.265"></a>
<span class="sourceLineNo">266</span>        }<a name="line.266"></a>
<span class="sourceLineNo">267</span><a name="line.267"></a>
<span class="sourceLineNo">268</span>}<a name="line.268"></a>




























































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